JPS5246508A - Noise absorption duct - Google Patents

Noise absorption duct

Info

Publication number
JPS5246508A
JPS5246508A JP50122542A JP12254275A JPS5246508A JP S5246508 A JPS5246508 A JP S5246508A JP 50122542 A JP50122542 A JP 50122542A JP 12254275 A JP12254275 A JP 12254275A JP S5246508 A JPS5246508 A JP S5246508A
Authority
JP
Japan
Prior art keywords
duct
noise absorption
absorption duct
noise
boards
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP50122542A
Other languages
Japanese (ja)
Inventor
Takashi Goto
Ryojiro Miura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Showa Denko KK filed Critical Showa Denko KK
Priority to JP50122542A priority Critical patent/JPS5246508A/en
Publication of JPS5246508A publication Critical patent/JPS5246508A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To absorb duct noise by partitioning the duct with partition boards and by adopting perforated boards for at least one side of the duct to attenuate the sound energy of particular frequencies by virtue of resonance at the perforation.
COPYRIGHT: (C)1977,JPO&Japio
JP50122542A 1975-10-13 1975-10-13 Noise absorption duct Pending JPS5246508A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50122542A JPS5246508A (en) 1975-10-13 1975-10-13 Noise absorption duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50122542A JPS5246508A (en) 1975-10-13 1975-10-13 Noise absorption duct

Publications (1)

Publication Number Publication Date
JPS5246508A true JPS5246508A (en) 1977-04-13

Family

ID=14838440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50122542A Pending JPS5246508A (en) 1975-10-13 1975-10-13 Noise absorption duct

Country Status (1)

Country Link
JP (1) JPS5246508A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688424B1 (en) * 1997-10-24 2004-02-10 Komatsu Ltd. Noise absorbing device and device for taking air into engine room of a construction machine
US9714630B2 (en) * 2015-10-07 2017-07-25 General Electric Company Noise baffle for a rotary machine and method of making same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4512292Y1 (en) * 1966-03-16 1970-05-29
JPS4916564U (en) * 1972-05-20 1974-02-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4512292Y1 (en) * 1966-03-16 1970-05-29
JPS4916564U (en) * 1972-05-20 1974-02-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6688424B1 (en) * 1997-10-24 2004-02-10 Komatsu Ltd. Noise absorbing device and device for taking air into engine room of a construction machine
US9714630B2 (en) * 2015-10-07 2017-07-25 General Electric Company Noise baffle for a rotary machine and method of making same

Similar Documents

Publication Publication Date Title
JPS5499401A (en) Sound absorbing structure
JPS5336201A (en) Sound absorbing structure
GB2028049B (en) Sound absorbing resonators
JPS51127942A (en) Engine enclosure having noise attenuating function
JPS5246508A (en) Noise absorption duct
JPS5424356A (en) Nonvibratory heat shield
JPS51121356A (en) Anti-vibration bench device
JPS53131312A (en) Noise abosrbing exhaust silencer
JPS51115584A (en) Method for absorbing rail vibration
JPS5318357A (en) Arithmetic unit having check functions
JPS53113173A (en) Sound deadening apparatus for gas duct
AT349728B (en) SOUND ABSORBING DOOR
JPS5254797A (en) High-density polyurethane foams having flmae resistant, soundproof and damping properties
JPS5211901A (en) Sound absorbing unit
JPS51139004A (en) Rail with noise reducing constraction
JPS5461222A (en) Sound absorbing perlite board
JPS52155501A (en) Bothhside sound absorbing sound insulating panel
JPS53120501A (en) Sound-proof cover
JPS55119284A (en) Unit type sound absorbing silencer
JPS5221801A (en) Noise attenuating separator
JPS5243209A (en) Device for reducing noise for railway vehicle
JPS51131007A (en) Soundproof wall for a monorail car
JPS54107125A (en) Perforated sound absorbing plate
JPS51129282A (en) Ultrasonics absorver
JPS5352857A (en) Turnbuckle